Process for hydroformylation of olefins using Pt and iodine

A process comprising the process steps of:

• a) initially charging an olefin;
• b) adding a compound of formula (I):
• where R1, R2, R3, R4, R5, R6, R7 and R8 are selected from:
• —H, —(C1-C12)-alkyl or —(C6-C20)—aryl;
• and, if R1, R2, R3, R4, R5, R6, R7 and R8 are —(C6-C20)-aryl, the aryl ring may have substituents selected from:
• —(C1-C12)-alkyl or —O—(C1-C12)-alkyl;
• c) adding a Pt compound capable of forming a complex;
• d) adding an iodine compound;
• e) feeding in CO and H2;
• f) heating the reaction mixture from steps a) to e), to convert the olefin to an aldehyde.